U.S. oil prices fell more than 1 percent on Monday, easing from two-year highs on prospects of higher supply from a planned restart of the Keystone crude pipeline and uncertainty about Russia’s resolve to join in extending output cuts ahead of this week’s OPEC meeting.  TransCanada Corp ( TRP.TO ) said it will restart its Keystone crude oil pipeline at reduced pressure on Tuesday after getting approval from U.S. regulators. Calgary-based TransCanada shut down the 590,000 barrel-per-day pipeline, one of Canada’s main crude export routes to the United States, on Nov. 16 after 5,000 barrels of oil leaked in South Dakota. Keystone carries crude […]